Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...

The six-mile-wide asteroid punched a one-way ticket toward extinction for all non-avian dinosaurs. Some 66 million years ...

The 700–1,300 feet-wide space rock deformed rocks more than six miles from the impact site when it hit 600 million years ago.

Around 600 million years ago, Earth was home to strange, soft-bodied sea creatures, but a powerful asteroid impact in what is ...

One fateful day 66 million years ago, the dinosaurs — which had inhabited Earth for about 165 million years — got a nasty surprise: A roughly 9-mile-wide (15 kilometers) asteroid crashed into ...

This new map of the megaripples can help predict the impact of future tsunamis, and to better understand the dinosaur extinction event, scientists say.

They flattened forests, left massive craters and even killed the dinosaurs. Learn all about Earth’s hugest asteroid strikes.

New research suggests the violent explosions of dying stars may have caused two of Earth’s biggest mass extinctions millions ...

"Megaripples" in the seafloor that were created in the aftermath of the dinosaur-killing asteroid impact extend much farther ...

The extinction of the dinosaurs was most probably caused by an asteroid hitting the Earth - but what would have happened if the giant space rock had missed? For a long time it was thought that ...

Maybe you've heard about the asteroid that killed all the dinosaurs 66 million years ago. The impact caused the Chicxulub ...

The crash left a giant crater around 110 miles ... most scientists think the asteroid caused the mass extinction. Only small theropod dinosaurs survived the extinction; the ancestors of modern ...